Side by side comparison and review of CAT S31 and Nokia G21. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | CAT S31 | Nokia G21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch - Rugged | Touch | |
| Height | 146 mm | 164.6 mm | Nokia G21 has greater height than CAT S31. |
| Width | 74.42 mm | 75.9 mm | Nokia G21 has greater width than CAT S31. |
| Depth | 12.6 mm | 8.5 mm | Nokia G21 is narrower than CAT S31. |
| Weight | 200 g | 190 g | Nokia G21 is lighter than CAT S31. |
| Body Colour | - | Nordic blue | Dusk | |
| Body Material | - | Polycarbonate | |
| Protection | Shockproof, dustproof, waterproof | - | |
| Waterproof (Water-resistant) | Yes | - | CAT S31 is waterproof. |
| IP rating | IP68 | - | |
| SAR Value | 1.649 W/kg (body), 0.799 W/kg (head) | 1.048 W/kg (body), 0.339 W/kg (head) | |
| Integrated Components | - | FM radio | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | CAT S31 | Nokia G21 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 4.7" | 6.5" | Nokia G21 has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1600 x 720 pixels | Nokia G21 has better screen resolution than CAT S31. |
| Display Format | HD | HD+ | |
| Aspect Ratio | - | 20:9 | |
| Max Brightness | - | 400 cd/m² | |
| Display Enhancement Technology | Super Bright Display | - | |
| Display Refresh Rate | - | 90 Hz | |
| Touch Sampling Rate | - | 180 Hz | |
| Display Features | - | V-notch display, High brightness mode | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | - |
| PROCESSOR | CAT S31 | Nokia G21 |
|---|
| Processor Type (CPU) | Qualcomm | Unisoc | |
|---|---|---|---|
| Processor Number | MSM8909 | T606 | |
| Clock Speed | - | 1.6 GHz | |
| Processor Core Qty | Quad-core | 8-core | Nokia G21 has higher processor core quantity than CAT S31. |
| MEMORY | CAT S31 | Nokia G21 |
|---|
| RAM | 2 GB | 4 GB | Nokia G21 has more RAM than CAT S31. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 64 GB | Nokia G21 has more internal memory than CAT S31. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSD, microSDXC - up to 512 GB |
| CAMERA | CAT S31 | Nokia G21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 3 | |
|---|---|---|---|
| Sensor Resolution | 8 Megapixel | 50 Megapixel | Nokia G21 has better camera resolution than CAT S31. |
| Sensor Size | - | 1/2.76" | |
| Sensor Type | - | CMOS | |
| Lens Aperture | - | F/1.8 | |
| Lens Construction | - | 5-element | |
| Pixel Size | - | 0.64 μm | |
| Focus Adjustment | Automatic | - | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 1280 x 720 (720p) at 120 fps | - | |
| Camera Features (Functions) | - | AI imaging technology |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Camera Functions (2nd Camera) | - | Macro camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Camera Functions (3rd Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 2 Megapixel | 8 Megapixel | Nokia G21 has better front camera resolution than CAT S31. |
| Focus Adjustment | Focus free | - |
| BATTERY AND CHARGING | CAT S31 | Nokia G21 |
|---|
| Battery Capacity (Battery Size) | 4000 mAh | 5050 mAh | Nokia G21 has larger battery capacity than CAT S31. |
|---|---|---|---|
| Standby Time | 912 hours | - | |
| Talk Time | 1800 minutes | - | |
| Run Time Details | Talk: up to 1800 min Standby: up to 912 hrs |
Mixed usage: up to 72 hrs | |
| Battery Technology | Lithium Ion | - |
| CELLULAR | CAT S31 | Nokia G21 |
|---|
| Technology | WCDMA (UMTS) / GSM | - | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 7.0 Nougat | Android 11 | |
| Intelligent Assistant | - | Google Assistant | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, Galileo |
| COMMUNICATIONS | CAT S31 | Nokia G21 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 5, Band 8 | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 850, 900 | 2100, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20 | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.1 | Bluetooth 5.0 | |
| NFC | - | Yes | Nokia G21 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | CAT S31 | Nokia G21 |
|---|
| Sound Enhancements | - | OZO spatial sound recording |
|---|
| FEATURES | CAT S31 | Nokia G21 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass | Accelerometer, ambient light sensor, proximity sensor | |
| Security Devices | - | Face recognition, fingerprint reader (side) | |
| Security Technology | - | Face Unlock | |
| Additional Phone Features | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | Dual microphones, Fast Charging, Google Assistant Button, 3 years of Security Updates, 2 years of OS upgrades, guaranteed upgrade to Android 12 | |
| Android Enterprise Recommended | Yes | - |
| OTHERS | CAT S31 | Nokia G21 |
|---|
| Included Accessories | Power adapter | USB-C cable, screen protector (pre-applied), 10W charger | |
|---|---|---|---|
| Compliant Standards | MIL-STD 810G, IP68 | - | |
| Max Depth of Water Resistance | 1.2 m | - | |
| Max Height of Shock Resistance | 1.8 m | - | |
| Max Operating Temperature | 55 °C | - | |
| Min Operating Temperature | -30 °C | - |
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